```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>LanDrop - 局域网文件传输利器</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css">
    <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/mermaid@latest/dist/mermaid.min.js"></script>
    <style>
        body {
            font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
            color: #333;
            line-height: 1.6;
        }
        h1, h2, h3, h4 {
            font-family: 'Noto Serif SC', serif;
            font-weight: 600;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .use-case-icon {
            transition: all 0.3s ease;
        }
        .use-case-item:hover .use-case-icon {
            transform: scale(1.1);
            color: #667eea;
        }
        .mermaid-tooltip {
            background-color: white;
            border: 1px solid #e2e8f0;
            border-radius: 0.5rem;
            padding: 0.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        }
    </style>
</head>
<body class="bg-gray-50">
    <!-- Hero Section -->
    <header class="hero-gradient text-white py-20 px-4 sm:px-6 lg:px-8">
        <div class="max-w-7xl mx-auto">
            <div class="flex flex-col lg:flex-row items-center">
                <div class="lg:w-1/2 mb-10 lg:mb-0">
                    <h1 class="text-4xl md:text-5xl lg:text-6xl font-bold leading-tight mb-6">
                        LanDrop
                        <span class="block text-2xl md:text-3xl font-medium mt-2">跨平台局域网文件传输解决方案</span>
                    </h1>
                    <p class="text-xl mb-8 opacity-90 max-w-lg">
                        无需互联网连接，只需局域网环境即可在不同设备间快速、安全地传输文件
                    </p>
                    <div class="flex flex-col sm:flex-row gap-4">
                        <a href="https://landrop.app/" class="bg-white text-indigo-700 hover:bg-gray-100 font-semibold py-3 px-6 rounded-lg transition duration-300 flex items-center justify-center gap-2">
                            <i class="fas fa-external-link-alt"></i> 官方网站
                        </a>
                        <a href="#features" class="bg-transparent border-2 border-white hover:bg-white hover:text-indigo-700 font-semibold py-3 px-6 rounded-lg transition duration-300 flex items-center justify-center gap-2">
                            <i class="fas fa-arrow-down"></i> 了解更多
                        </a>
                    </div>
                </div>
                <div class="lg:w-1/2 flex justify-center">
                    <div class="relative max-w-md w-full">
                        <div class="absolute -top-4 -left-4 w-32 h-32 bg-purple-300 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-blob"></div>
                        <div class="absolute -bottom-8 -right-4 w-32 h-32 bg-blue-300 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-blob animation-delay-2000"></div>
                        <div class="absolute top-20 -right-8 w-32 h-32 bg-pink-300 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-blob animation-delay-4000"></div>
                        <div class="relative bg-white bg-opacity-10 backdrop-filter backdrop-blur-lg rounded-2xl p-6 shadow-2xl border border-white border-opacity-20">
                            <div class="flex justify-between items-center mb-4">
                                <div class="flex space-x-2">
                                    <div class="w-3 h-3 rounded-full bg-red-500"></div>
                                    <div class="w-3 h-3 rounded-full bg-yellow-500"></div>
                                    <div class="w-3 h-3 rounded-full bg-green-500"></div>
                                </div>
                                <span class="text-xs font-medium">文件传输中...</span>
                            </div>
                            <div class="bg-white bg-opacity-90 rounded-lg p-4 mb-4">
                                <div class="flex items-center mb-3">
                                    <i class="fas fa-file-alt text-indigo-600 mr-2"></i>
                                    <div>
                                        <p class="text-sm font-medium text-gray-800">演示文稿.pdf</p>
                                        <p class="text-xs text-gray-500">25.3 MB</p>
                                    </div>
                                </div>
                                <div class="w-full bg-gray-200 rounded-full h-2">
                                    <div class="bg-indigo-600 h-2 rounded-full" style="width: 65%"></div>
                                </div>
                                <div class="flex justify-between text-xs text-gray-600 mt-1">
                                    <span>3.2 MB/s</span>
                                    <span>65%</span>
                                </div>
                            </div>
                            <div class="flex justify-between items-center text-sm">
                                <div class="flex items-center">
                                    <div class="w-8 h-8 rounded-full bg-blue-500 flex items-center justify-center text-white mr-2">
                                        <i class="fas fa-laptop"></i>
                                    </div>
                                    <span>我的MacBook</span>
                                </div>
                                <i class="fas fa-exchange-alt text-gray-300 mx-2"></i>
                                <div class="flex items-center">
                                    <div class="w-8 h-8 rounded-full bg-green-500 flex items-center justify-center text-white mr-2">
                                        <i class="fas fa-mobile-alt"></i>
                                    </div>
                                    <span>iPhone 13</span>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </header>

    <!-- Main Content -->
    <main class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-16">
        <!-- Introduction -->
        <section class="mb-20">
            <div class="text-center max-w-4xl mx-auto">
                <h2 class="text-3xl font-bold mb-6">重新定义本地文件传输体验</h2>
                <p class="text-xl text-gray-600 mb-8">
                    LanDrop 是一款专为局域网环境设计的跨平台文件传输工具，让您无需依赖互联网或云服务，即可在不同设备间快速、安全地共享文件。
                </p>
                <div class="flex justify-center">
                    <div class="bg-indigo-100 text-indigo-800 px-4 py-2 rounded-full inline-flex items-center">
                        <i class="fas fa-bolt mr-2"></i>
                        <span>传输速度最高可达100MB/s</span>
                    </div>
                </div>
            </div>
        </section>

        <!-- Features Section -->
        <section id="features" class="mb-20">
            <div class="text-center mb-12">
                <h2 class="text-3xl font-bold mb-4">主要特点</h2>
                <p class="text-gray-600 max-w-2xl mx-auto">LanDrop 提供了简单而强大的功能组合，满足您的各种文件传输需求</p>
            </div>
            <div class="grid md:grid-cols-2 lg:grid-cols-3 gap-8">
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-wifi text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">无需互联网连接</h3>
                    <p class="text-gray-600">利用局域网进行文件传输，即使没有互联网访问权限也能正常工作</p>
                </div>
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-laptop-code text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">跨平台兼容</h3>
                    <p class="text-gray-600">支持 Windows、macOS、Linux、Android 和 iOS 系统，覆盖所有主流平台</p>
                </div>
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-magic text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">简单易用</h3>
                    <p class="text-gray-600">直观的界面设计，支持拖放操作，无需复杂学习即可上手</p>
                </div>
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-tachometer-alt text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">高速传输</h3>
                    <p class="text-gray-600">充分利用局域网带宽，传输速度远超云服务，大大节省您的时间</p>
                </div>
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-infinity text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">无大小限制</h3>
                    <p class="text-gray-600">可传输任意大小的文件，不受云服务上传下载限制的困扰</p>
                </div>
                <div class="feature-card bg-white p-8 rounded-xl shadow-lg transition duration-300">
                    <div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center text-indigo-600 mb-4">
                        <i class="fas fa-user-shield text-xl"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">安全传输</h3>
                    <p class="text-gray-600">文件直接在设备之间传输，不经过第三方服务器，确保数据隐私和安全</p>
                </div>
            </div>
        </section>

        <!-- Use Cases Section -->
        <section class="mb-20">
            <div class="text-center mb-12">
                <h2 class="text-3xl font-bold mb-4">使用场景</h2>
                <p class="text-gray-600 max-w-2xl mx-auto">LanDrop 适用于多种需要快速共享文件的场景</p>
            </div>
            <div class="grid md:grid-cols-2 lg:grid-cols-5 gap-6">
                <div class="use-case-item bg-white p-6 rounded-lg shadow-md text-center">
                    <div class="use-case-icon w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto mb-4">
                        <i class="fas fa-building"></i>
                    </div>
                    <h3 class="font-semibold mb-2">办公室内部文件共享</h3>
                    <p class="text-sm text-gray-600">快速分享文档给同事，提高工作效率</p>
                </div>
                <div class="use-case-item bg-white p-6 rounded-lg shadow-md text-center">
                    <div class="use-case-icon w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto mb-4">
                        <i class="fas fa-chalkboard-teacher"></i>
                    </div>
                    <h3 class="font-semibold mb-2">会议期间分享演示文稿</h3>
                    <p class="text-sm text-gray-600">即时传输会议资料，无需U盘或邮件</p>
                </div>
                <div class="use-case-item bg-white p-6 rounded-lg shadow-md text-center">
                    <div class="use-case-icon w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto mb-4">
                        <i class="fas fa-users"></i>
                    </div>
                    <h3 class="font-semibold mb-2">朋友间分享照片和视频</h3>
                    <p class="text-sm text-gray-600">聚会后快速分享原始质量的媒体文件</p>
                </div>
                <div class="use-case-item bg-white p-6 rounded-lg shadow-md text-center">
                    <div class="use-case-icon w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto mb-4">
                        <i class="fas fa-globe-americas"></i>
                    </div>
                    <h3 class="font-semibold mb-2">无互联网环境下传输文件</h3>
                    <p class="text-sm text-gray-600">在没有网络的地方也能共享重要文件</p>
                </div>
                <div class="use-case-item bg-white p-6 rounded-lg shadow-md text-center">
                    <div class="use-case-icon w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto mb-4">
                        <i class="fas fa-file-archive"></i>
                    </div>
                    <h3 class="font-semibold mb-2">大型文件快速传输</h3>
                    <p class="text-sm text-gray-600">传输视频、设计文件等大体积文件不再耗时</p>
                </div>
            </div>
        </section>

        <!-- How It Works -->
        <section class="mb-20">
            <div class="text-center mb-12">
                <h2 class="text-3xl font-bold mb-4">工作原理</h2>
                <p class="text-gray-600 max-w-2xl mx-auto">简单三步，轻松完成文件传输</p>
            </div>
            <div class="grid md:grid-cols-3 gap-8 mb-12">
                <div class="text-center">
                    <div class="w-20 h-20 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-3xl mx-auto mb-4">
                        <span class="font-bold">1</span>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">设备发现</h3>
                    <p class="text-gray-600">LanDrop 自动扫描局域网，发现同一网络中的其他设备</p>
                </div>
                <div class="text-center">
                    <div class="w-20 h-20 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-3xl mx-auto mb-4">
                        <span class="font-bold">2</span>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">选择文件</h3>
                    <p class="text-gray-600">拖放或选择要传输的文件，并选择目标设备</p>
                </div>
                <div class="text-center">
                    <div class="w-20 h-20 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-3xl mx-auto mb-4">
                        <span class="font-bold">3</span>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">确认传输</h3>
                    <p class="text-gray-600">接收方确认后，文件开始高速传输</p>
                </div>
            </div>
            
            <!-- Mermaid Diagram -->
            <div class="bg-white rounded-xl shadow-lg p-6">
                <div class="mermaid">
                    flowchart TD
                        A[发送设备] -->|1. 发现设备| B[接收设备]
                        A -->|2. 发送请求| B
                        B -->|3. 确认接收| A
                        A -->|4. 传输文件| B
                        B -->|5. 接收完成| A
                </div>
            </div>
        </section>

        <!-- Comparison Section -->
        <section class="mb-20">
            <div class="text-center mb-12">
                <h2 class="text-3xl font-bold mb-4">为什么选择 LanDrop</h2>
                <p class="text-gray-600 max-w-2xl mx-auto">与传统文件传输方式的对比</p>
            </div>
            <div class="bg-white rounded-xl shadow-lg overflow-hidden">
                <div class="grid grid-cols-1 md:grid-cols-3 divide-y md:divide-y-0 md:divide-x">
                    <div class="p-8">
                        <div class="text-center mb-6">
                            <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto">
                                <i class="fas fa-cloud"></i>
                            </div>
                            <h3 class="text-xl font-semibold mt-4 mb-2">云服务</h3>
                        </div>
                        <ul class="space-y-3">
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>需要互联网连接</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>通常有文件大小限制</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>需要账户注册</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>文件经过第三方服务器</span>
                            </li>
                        </ul>
                    </div>
                    <div class="p-8 bg-indigo-50">
                        <div class="text-center mb-6">
                            <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto">
                                <i class="fas fa-network-wired"></i>
                            </div>
                            <h3 class="text-xl font-semibold mt-4 mb-2">LanDrop</h3>
                        </div>
                        <ul class="space-y-3">
                            <li class="flex items-start">
                                <i class="fas fa-check text-green-500 mt-1 mr-2"></i>
                                <span>仅需局域网环境</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-check text-green-500 mt-1 mr-2"></i>
                                <span>无文件大小限制</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-check text-green-500 mt-1 mr-2"></i>
                                <span>无需账户注册</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-check text-green-500 mt-1 mr-2"></i>
                                <span>点对点直接传输</span>
                            </li>
                        </ul>
                    </div>
                    <div class="p-8">
                        <div class="text-center mb-6">
                            <div class="w-16 h-16 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 text-2xl mx-auto">
                                <i class="fas fa-usb"></i>
                            </div>
                            <h3 class="text-xl font-semibold mt-4 mb-2">USB/U盘</h3>
                        </div>
                        <ul class="space-y-3">
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>需要物理设备</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>容易丢失或损坏</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>传输速度受限于接口</span>
                            </li>
                            <li class="flex items-start">
                                <i class="fas fa-times text-red-500 mt-1 mr-2"></i>
                                <span>无法同时向多设备传输</span>
                            </li>
                        </ul>
                    </div>
                </div>
            </div>
        </section>

        <!-- CTA Section -->
        <section class="bg-indigo-600 text-white rounded-2xl p-10 text-center mb-20">
            <h2 class="text-3xl font-bold mb-4">立即体验极速文件传输</h2>
            <p class="text-xl mb-8 max-w-2xl mx-auto">LanDrop 是完全免费的，支持所有主流平台，现在就开始使用吧！</p>
            <a href="https://landrop.app/" class="inline-block bg-white text-indigo-600 hover:bg-gray-100 font-semibold py-4 px-8 rounded-lg transition duration-300 text-lg">
                <i class="fas fa-download mr-2"></i> 下载 LanDrop
            </a>
        </section>
    </main>

    <!-- Footer -->
    <footer class="bg-gray-900 text-gray-300 py-10">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
            <div class="flex flex-col items-center">
                <div class="mb-4">
                    <span class="text-xl font-semibold">技术小馆</span>
                </div>
                <div>
                    <a href="http://www.yuque.com/jtostring" class="hover:text-white transition duration-200">
                        <i class="fas fa-link mr-1"></i> http://www.yuque.com/jtostring
                    </a>
                </div>
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```